var blogTreeStore = Ext.create('Ext.data.TreeStore', {
    root: {
        expanded: true,
         children: [
            { text: 'List', leaf: true },
            { text: 'Add', leaf: true},
            { text: 'Edit', leaf: true }
        ]
    }
});


Ext.define('GM.BlogMenuPanel', {
        extend: 'Ext.tree.Panel',
        alias: 'widget.blogMenuPanel',
        rootVisible: false,
        store: blogTreeStore
});